2004 INFINITI FX35 rack

CAMSHAFT
EM-89
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: 2004 November 2004 FX35/FX45
5. Tighten camshaft brackets in the following steps, in numerical
order as shown in the figure.
a. Tighten No. 7 to 10, then tighten No. 1 to 6 in order as shown.
b. Tighten all bolts in numerical order as shown.
c. Tighten all bolts in the numerical order as shown.
CAUTION:
After tightening mounting bolts of No. 1 camshaft brackets
(No. 1), be sure to wipe off excessive liquid gasket from the
parts list below.

Mating surface of rocker cover

Mating surface of rear timing chain case
6. Measure difference in levels between front end faces of No. 1
camshaft bracket and cylinder head.

If measurement is outside the specified range, re-install cam-
shaft and camshaft bracket.
7. Inspect and adjust valve clearance. Refer to EM-89, "
Valve Clearance" .
8. Install in the reverse order of removal after this step.
Va l v e C l e a r a n c eABS004XG
INSPECTION
Perform inspection as follows after removal, installation or replace-
ment of camshaft or valve-related parts, or if there is unusual engine
conditions regarding valve clearance.
1. Remove right and left rocker covers with power tool. Refer to EM-51, "
ROCKER COVER" .
2. Measure valve clearance as below:
a. Set No. 1 cylinder at TDC of its compression stroke. : 1.96 N·m (0.20 kg-m, 1 ft-lb)
: 5.88 N·m (0.60 kg-m, 4 ft-lb)
: 10.4 N·m (1.1 kg-m, 8 ft-lb)
PBIC2050E
Standard : –0.14 to 0.14 mm (–0.0055 to 0.0055 in)
EMQ0044D
SEM713A

EM-110
[VQ35DE]
ENGINE ASSEMBLY
Revision: 2004 November 2004 FX35/FX45
ENGINE ASSEMBLYPFP:10001
Removal and InstallationABS008GN
2WD MODEL
WARNING:

Situate vehicle on a flat and solid surface.

Place chocks at front and back of rear wheels.

For engines not equipped with engine slingers, attach proper slingers and bolts described in
PARTS CATALOG.
CAUTION:

Always be careful to work safely, avoid forceful or uninstructed operations.

Do not start working until exhaust system and engine coolant are cool enough.

If items or work required are not covered by the engine section, refer to the applicable sections.

Always use the support point specified for lifting.

Use either 2-point lift type or separate type lift as best you can. If board-on type is used for
unavoidable reasons, support at rear axle jacking point with transmission jack or similar tool
before starting work, in preparation for the backward shift of center of gravity.

For supporting points for lifting and jacking point at rear axle, refer to GI-42, "Garage Jack and
Safety Stand" .
1. Engine mounting bracket 2. Heat insulator 3. Engine mounting insulator
4. Rear member 5. Harness bracket
SBIA0476E

ENGINE ASSEMBLY
EM-113
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: 2004 November 2004 FX35/FX45
Separation Work
1. Install engine slingers into front of right bank cylinder head and
rear of left bank cylinder head.
2. Remove power steering oil pump from engine side. Refer to PS-
31, "POWER STEERING OIL PUMP" .
3. Remove engine mounting insulator under side nut with power
tool.
4. Lift with hoist and separate engine and transmission assembly
from suspension member.
CAUTION:

Before and during this lifting, always check if any harnesses are left connected.

Avoid damage to and oil/grease smearing or spills onto engine mounting insulator.
5. Remove alternator. Refer to SC-23, "
CHARGING SYSTEM" .
6. Remove starter motor. Refer to SC-10, "
STARTING SYSTEM" .
7. Separate engine from transmission assembly. Refer to AT- 2 6 6 , "
TRANSMISSION ASSEMBLY" .
8. Remove engine mounting insulator and bracket with power tool.
INSTALLATION
Note to the following, and install in the reverse order of removal.

For a location with a positioning pin, insert it securely into hole of
mating part.

For a part with a specified installation orientation, refer to com-
ponent figure in EM-110, "
2WD MODEL" .

When installing engine mounting bracket on cylinder block,
tighten two upper bolts (shown as A in figure) first. Then tighten
two lower bolts (shown as B in figure). (LH and RH sides)

Tighten rear member mounting bolts in numerical order shown
in figure.
INSPECTION AFTER INSTALLATION

Before starting engine, check the levels of engine coolant, engine oil and working fluid. If less than
required quantity, fill to the specified level.

Use procedure below to check for fuel leakage.
–Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of engine coolant, engine oil, working fluid,
fuel and exhaust gas.Slinger bolts:
: 28.0 N·m (2.9 kg-m, 21 ft-lb)
SBIA0474E
PBIC1134E
KBIA1019E

ENGINE ASSEMBLY
EM-115
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: 2004 November 2004 FX35/FX45
AWD MODEL
WARNING:

Situate vehicle on a flat and solid surface.

Place chocks at front and back of rear wheels.

For engines not equipped with engine slingers, attach proper slingers and bolts described in
PARTS CATALOG.
CAUTION:

Always be careful to work safely, avoid forceful or uninstructed operations.

Do not start working until exhaust system and engine coolant are cool enough.

If items or work required are not covered by the engine section, refer to the applicable sections.

Always use the support point specified for lifting.

Use either 2-point lift type or separate type lift as best you can. If board-on type is used for
unavoidable reasons, support at rear axle jacking point with transmission jack or similar tool
before starting work, in preparation for the backward shift of center of gravity.

For supporting points for lifting and jacking point at rear axle, refer to GI-42, "Garage Jack and
Safety Stand" .
REMOVAL
Outline
At first, remove engine and transmission assembly with suspension member downward. Then separate
engine from transmission.
1. Engine mounting bracket 2. Engine mounting bracket (Lower) 3. Engine mounting insulator FR
4. Harness bracket 5. Heat insulator 6. Caller
7. Rubber bush 8. Rear member 9. Engine mounting insulator RR
10. Dynamic damper 11. Washer 12. Dynamic damper
SBIA0475E

EM-118
[VQ35DE]
ENGINE ASSEMBLY
Revision: 2004 November 2004 FX35/FX45
5. Remove front drive shaft LH and RH sides. Refer to FAX-12, "FRONT DRIVE SHAFT" .
6. Remove alternator. Refer to SC-23, "
CHARGING SYSTEM" .
7. Remove starter motor. Refer to SC-10, "
STARTING SYSTEM" .
8. Remove front propeller shaft from front final drive assembly side. Refer to PR-4, "
FRONT PROPELLER
SHAFT" .
9. Separate engine from transmission assembly. Refer to AT- 2 6 6 , "
TRANSMISSION ASSEMBLY" .
10. Remove engine mounting insulator FR and engine mounting bracket with power tool.
11. Remove front final drive assembly from oil pan (upper). Refer to FFD-10, "
FRONT FINAL DRIVE ASSEM-
BLY" .
INSTALLATION
Note to the following, and install in the reverse order of removal.

For a location with a positioning pin, insert it securely into hole of
mating part.

For a part with a specified installation orientation, refer to com-
ponent figure in EM-115, "
AWD MODEL" .

When installing engine mounting bracket on cylinder block,
tighten two upper bolts (shown as A in figure) first. Then tighten
two lower bolts (shown as B in figure). (LH and RH sides)

Install engine mounting bracket (lower) paying attention to the
following.
–a. Temporarily tighten mounting bolts (shown as C, D and E in
figure).
–b. Tighten mounting bolts to the specified torque with following
mounting surfaces touched.
 Engine mounting bracket to engine mounting bracket (lower)
(shown as C and D in figure).
 Front final drive to engine mounting bracket (lower) (shown as E
in figure).
INSPECTION AFTER INSTALLATION

Before starting engine, check the levels of engine coolant, engine oil and working fluid. If less than
required quantity, fill to the specified level.

Use procedure below to check for fuel leakage.
–Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of engine coolant, engine oil, working fluid,
fuel and exhaust gas.

Bleed air from passages in pipes and tubes of applicable lines, such as in cooling system.

After cooling down engine, again check amounts of engine coolant, engine oil and working fluid. Refill to
specified level, if necessary.

Summary of the inspection items:
SBIA0477E
SBIA0478E
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Working fluid Level Leakage Level

CYLINDER BLOCK
EM-121
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: 2004 November 2004 FX35/FX45
DISASSEMBLY
1. Remove engine assembly from vehicle, and separate transmission from engine. Refer to EM-110,
"ENGINE ASSEMBLY" .
2. Remove engine mounting bracket. Refer to EM-110, "
ENGINE ASSEMBLY" .
3. Remove RH side exhaust manifold. Refer to EM-26, "
EXHAUST MANIFOLD AND THREE WAY CATA-
LYST" .
4. Install engine sub-attachment with engine stand shaft (SST) to
right side of cylinder block.

Use spacer to engine rear side.
1. Cylinder block 2. Reinforcement plate 3. Drive plate
4. Rear oil seal retainer 5. Cover 6. Gasket
7. Knock sensor 8. Oil jet 9. Thrust bearing
10. Pilot converter 11. Main bearing 12. Crankshaft
13. Key 14. Main bearing cap 15. Main bearing cap bolt
16. Main bearing beam 17. Baffle plate (2WD model) 18. Top ring
19. Second ring 20. Oil ring 21. Piston
22. Piston pin 23. Snap ring 24. Connecting rod
25. Connecting rod bearing 26. Connecting rod bearing cap 27. Connecting rod bolt
1. Cylinder block 2. Gasket 3. Water connector
4. Gasket 5. Cylinder block heater 6. Connector protector cap
PBIC2614E
SBIA0503E

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
EM-167
[VK45DE]
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: 2004 November 2004 FX35/FX45
Use the Chart Below to Help You Find the Cause of the Symptom.ABS006I5
1. Locate the area where noise occurs.
2. Confirm the type of noise.
3. Specify the operating condition of engine.
4. Check specified noise source.
If necessary, repair or replace these parts.
A: Closely related B: Related C: Sometimes related —: Not relatedLocation
of noiseTy p e o f
noiseOperating condition of engine
Source of
noiseCheck itemRefer-
ence page Before
warm-
upAfter
warm-
upWhen
start-
ingWhen
idlingWhen
racingWhile
driving
Top of
engine
Rocker
cover
Cylinder
headTicking or
clickingC A — A B — Tappet noise Valve clearanceEM-214
Rattle C A — A B CCamshaft
bearing noiseCamshaft journal oil
clearance
Camshaft runoutEM-210EM-209
Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil panSlap or
knock—A—B B—Piston pin
noisePiston to piston pin oil
clearance
Connecting rod bush-
ing oil clearanceEM-256
EM-258
Slap or
rapA——BBAPiston slap
noisePiston to cylinder bore
clearance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsionEM-260EM-257
EM-257
EM-258
Knock ABCBBBConnecting
rod bearing
noiseConnecting rod bush-
ing oil clearance
Connecting rod bear-
ing oil clearanceEM-258EM-263
Knock A B — A B CMain bearing
noiseMain bearing oil clear-
ance
Crankshaft runoutEM-264EM-262
Front of
engine
front coverTapping or
tickingAA—BBBTiming chain
and chain
tensioner
noiseTiming chain cracks
and wear
Timing chain tensioner
operationEM-201
EM-196
Front of
engineSqueak-
ing or fizz-
ingAB—B—CDrive belts
(Sticking or
slipping)Drive belts deflection
EM-169Creaking A B A B A BDrive belts
(Slipping)Idler pulley bearing
operation
Squall
CreakAB—BABWater pump
noiseWater pump operationCO-49,
"WATER
PUMP"

DRIVE BELTS
EM-169
[VK45DE]
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: 2004 November 2004 FX35/FX45
DRIVE BELTSPFP:02117
Checking Drive BeltsABS006I7
WARNING:
Be sure to perform when engine is stopped.

Remove air duct (inlet) when inspecting drive belt for alternator, water pump and A/C compressor.

Remove front engine undercover with power tool when inspecting power steering oil pump belt.

Make sure that indicator (single line notch) of each auto tensioner is within the allowable working range
(between three line notches).
NOTE:

Check auto tensioner indication when engine is cold.

When new drive belt is installed, the range should be “A”.

The indicator notch is located on the moving side of auto tensioner for alternator, water pump and A/C
compressor belt, while it is found on the fixed side for power steering oil pump belt.

Visually check entire belt for wear, damage or cracks.

If the indicator is out of allowable working range or belt is damaged, replace belt.
Tension AdjustmentABS006I8
Belt tensioning is not necessary, as it is automatically adjusted by auto tensioner.
Removal and InstallationABS006I9
REMOVAL
Alternator, Water Pump and A/C Compressor Belt
1. Remove air duct (inlet). Refer to EM-172, "AIR CLEANER AND AIR DUCT" .
2. Front engine undercover with power tool.
3. With box wrench, and while securely holding the hexagonal part
in pulley center of auto tensioner, move wrench handle in the
direction of arrow (loosening direction of tensioner).
CAUTION:
Avoid placing hand in a location where pinching may occur
if the holding tool accidentally comes off.
4. Under the above condition, insert a metal bar of approximately 6
mm (0.24 in) in diameter (hexagonal bar wrench shown as
example in the figure) through the holding boss to lock auto ten-
sioner pulley arm.

Leave auto tensioner pulley arm locked until belt is installed
again.
PBIC2331E
PBIC1542E